Julius



(No Model.)

J. o. MEYER, :SASH LOCK.

No. 558,972. Patented Apr. 28,1896.

mllllll IN DREW B GRAHAM. PHOTULITHQWASNINGTUN. DL.

UNITED STATES i ATENT OEEICE.

JULIUS (l. MEYER, OF NEV YORK, N. Y.

sAsH-LocK.

SPECIFICATION forming part of Letters Patent No. 558,972, dated April28, 1896. Appliemion Bled February 5,18% serial No. 678,102. (Nomaden)To all whom, t may concern.-

Be it known that I, JULIUs C. MEYER, of New York city, New York, haveinvented an Improved Sash-Lock, of which the following is aspecification.

rlhis invention relates to a sashdock which is so constructed that by itthe sashes may be locked when closed and also when the upn per sash ispartly drawn down. Thus the 1o windows are properly protected againstunauthorized opening by children or intruders and still fresh air may beadmitted into the room.

In the accompanying drawings, Figure lis a face view, partly in section,of my improved sash-lock, showing the lock-case open. Fig. 2 is an endview of the sash-lock; Fig. 3, a section on line 3 S, Fig. l; and Fig.4, a side view of the cam d.

zo The letter A represents the upper sash, B the lower sash, and C thejamb of a window. To one of the stiles of the sash A are attachedvertically above one another and at suitable distances apart a number ofslottedor notched plates a. Of these the lowermost plate is attacheddirectly above the upper edge of the lower sash B, and is adapted tolock the up- Vper sash when the same is entirely closed. The otherplates a are adapted to lock the 3o upper sash when the same is more orless opened.

To the jamb C there is secured opposite to the meeting-rails of thesashes a lock-case t, adapted to be closed by the plate t'. With- 3 5 inthis case is pivoted at c a locking-bar o, having a hook-shaped outerend c2, which is adapted to enter the slotted plate ct and to engage theedge thereof.

The inner end of the locking-bar c is notched,

4o as at c3, and this notch is engaged bya finger d of a cam or disk d,pivoted within case Zu at d2. The cam d is provided with a facegrooved3, adapted to be engaged by a handlever or key e, that serves torevolve the cam and to thereby open or close the lock. A

spring f, bearing against the cam, holds the latter in position.

The operation of my improved sash-lock will be readily understood. Whenthe look is to be closed, the key is inserted into a slot 5o b2 of thelock-case to engage the cam-groove and is then depressed, so as torevolve the cam downward and lower the locking-bar. (Full lines, Fig.l.) This bar will now engage that one of the plates a that is broughtinto alinement therewith, and thus the upper sash will be locked. Thelocking of the bar c is effected by means of the finger d', thatprojects at about right angles to the edge of e notch c3, and thusprevents the bar from be- 6o ing moved upward and either of the sashesfrom being raised. The lowering of the upper sash is prevented by theengagement of the upper edge of groove in plate a with the upper edge ofthe bill c2. If the lock is to be opened, the key is inserted and raisedso as to revolve the cam upward and raise the locking-bar out ofengagement with the plate a and into the upright position indicated bydotted lines, Fig. 1. 7o

It will be seen that by my invention the lock may be quickly opened orclosed, and that when closed it will effectively secure the window andlock the upper sash in any one of its various positions.

Vhat I claim is* A sash-lock composed of a case adapted to be attachedto a windowfframe, a lockingbar pivoted thereto and having ahook-shapedouter end and a notched inner end, agrooved 8o cam having a fingeradapted to engage such inner end, a key adapted to engage the cam, and aseries of notched plates secured vertically above each other to theupper sash .and adapted to be engaged by the hook-shaped end 8 5 of thelocking-bar, substantially as speciiied.

JULIUS C. MEYER. Witnesses:

WILLIAM SCHULZ, F. v. BEIESEN.

